Conversions & Swaps LSX Engines in Non-LSX Vehicles
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LC9 swap to non AFM

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Old Apr 25, 2018 | 10:13 AM
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Default LC9 swap to non AFM

Would like to swap Chevy LC9 Gen 4 from 2008 avalanche 4x4 with non AFM LM7 Gen 3,reprogram ECM.
I know it will lose 25hp. Problem is the 24 tooth vs 58 tooth reluctor wheel on crankshft...any ideas on who offers long block with this feature

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Old Apr 25, 2018 | 11:39 AM
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Originally Posted by plxman111
Would like to swap Chevy LC9 Gen 4 from 2008 avalanche 4x4 with non AFM LM7 Gen 3,reprogram ECM.
I know it will lose 25hp. Problem is the 24 tooth vs 58 tooth reluctor wheel on crankshft...any ideas on who offers long block with this feature
You can't reprogram a GenIII ECM to a GenIV or vice-versa. They are completely different processors.
If I have this wrong, you might want to more fully explain what you want to do.
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Old Apr 25, 2018 | 12:35 PM
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Simply put, wanted a crate motor with the AFM delete already performed 2008 Chevy Avalanche 5.3l Engine code LC9. (easy engine swap)
Going to perform AFM delete on existing motor, camshaft,16 lifters, oil pump and timing chain.
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